14.7: Canvas Only, Toggle Fullscreen on F and Escape

src/Document/EditorSession.cpp

@@ -361,6 +361,24 @@ void EditorSession::zoomKeyboard(int step)
     notify();
 }
 
+void EditorSession::setCanvasOnly(bool only)
+{
+    m_canvasOnly = only;
+    notify();
+}
+
+bool EditorSession::escapeHasNothingToCancel() const
+{
+    return !m_textDraft && !m_levels && !m_brushStroke && !m_warpStroke && !m_lassoDraft && !m_shapeDraft && !m_gradientEdit && !m_cropRect
+        && !m_guideDrag && !m_transformEdit && !m_pixelMove;
+}
+
+bool EditorSession::canToggleCanvasOnly() const
+{
+    return m_document && !m_textDraft && !m_filterEdit && !m_hueSaturation && !m_levels && !m_colorPicker && !adjustmentEditingID() && !m_effectsEditing
+        && !m_colorRange && !selectionAmountOperation();
+}
+
 void EditorSession::setShowsPixelGrid(bool shows)
 {
     m_showsPixelGrid = shows;

src/Document/EditorSession.h

@@ -243,6 +243,13 @@ public:
     // The View menu's grid, shown from 800%.
     bool showsPixelGrid() const { return m_showsPixelGrid; }
     void setShowsPixelGrid(bool shows);
+    // F: the canvas alone on black, panels and bars away.
+    bool canvasOnly() const { return m_canvasOnly; }
+    void setCanvasOnly(bool only);
+    // Nothing in progress for Escape to cancel: it leaves fullscreen.
+    bool escapeHasNothingToCancel() const;
+    // A canvas, and no text or dialog for an F.
+    bool canToggleCanvasOnly() const;
     // Swift's alias of View › Snap: moves, crops, drawing.
     bool snappingEnabled() const { return m_snapEnabled; }
     // The Eyedropper's ring: the sampled colour over the original.
@@ -344,6 +351,7 @@ private:
     std::optional<QUuid> m_renamingLayerID;
     std::optional<QString> m_projectPath;
     bool m_showsPixelGrid = ToolDefaults::boolean(QStringLiteral("pixelGrid"), true);
+    bool m_canvasOnly = false;
     // The layout grid starts off; guides show; rulers hide.
     bool m_showsGrid = ToolDefaults::boolean(QStringLiteral("grid"), false);
     LayoutGrid m_layoutGrid = LayoutGrid::stored();